Allow naval units to break land walls

If they have the range for it. The reason for this is the following:

In a scenario that takes place before planes existed, one can build a water wall of troops that is essentially unbreakable since they can't be reached by any unit that can currently break the units.

That's a needed change indeed. Support.

Support.

Aye, support.

Agreed. This is currently only possible with a bug hue.

Yeah, good point imagine a map where there is no air units and you make a giant sea wall!

Support!

Supper!